There is provided a renewable energy source ejector rack for retaining and releasing stores (bombs or the like) on an aircraft, which has on-board pressurization capability, employs a single pressurization system for two or more release mechanisms, and uses air or other clean non-pyrotechnic pressurized gases both as the energy source and energy transfer medium. The aircraft contains a miniature compressor and purification system. Ambient air is filtered, dried and stored as an energy medium. Since the compressor system is onboard, the pressure can be constantly maintained regardless of temperature change. Using purified air eliminates the excessive cleaning burden imposed when using state-of-the-art pyrotechnics, and eliminates the sealing problems associated with hydraulics.